Brendan L

Applying non-linear forces

Discussion created by Brendan L on Aug 8, 2008
Latest reply on Aug 13, 2008 by Sara Stults
Hi everyone,
I am trying to run a COSMOSWorks static stress analysis of an aircraft wing with an elliptical lift distribution (greater lift near the root of the wing, and less at the tip). My lift distribution is defined by a 2-D curve, so I am applying the load at the aerodynamic center of the wing (approximately at the quarter-chord), rather than over the entire top surface.

I have created a split line at the quarter chord to split the top surface of the wing, and I am trying to apply my force along the line, but COSMOS does not allow me to use an equation to define the force if it is applied on an edge or line.

Do you know if there is a better way to apply the force so it realistically models the elliptical distribution? Would it be better to apply the load over the top surface of the wing so that it can vary with the equation or to apply different forces to points along the line?

I am new to COSMOS, and am using COSMOSWorks Advanced Professional 2008 SP 0.


Sara Stults